MBTA Finalizes Green Line Extension Request For Proposal

SOMERVILLE, MA – The MBTA Green Line Extension Project Team this week released a final Request for Proposal (RFP) for the project's three shortlisted design-build firms. The RFP includes an affordability limit of $1.319 billion, base scope of work and six "additive options" that can be completed within the project schedule and budget. The additive options must not force the project over its total $2.3 billion budget.

Six "additive options" that may be proposed are included within the RFP. The options are not required, and the project must first meet the core elements of seven stations, train service, a vehicle maintenance facility and the community path before they are considered.

"This step represents another major milestone for GLX as we move closer to the design and build phase of the project,” Program Manager John Dalton said in a statement. "The MBTA has been actively engaged in pre-proposal exchanges with the three teams pursuing the design-build contract and looks forward to continuing that technical concept dialogue as each of the teams develops their responses to the Final RFP package being issued today."

The "additive options" are prioritized in the following order:

1. Platform canopies.
2. Additional elevators at select stations.
3. Public art.
4. Additional community connection to the community path located on Chester Street in Somerville.
5. Extension of the community path between East Somerville and Lechmere Stations.
6. Enhanced Vehicle Maintenance Facility in Somerville.

Three design-build firms have been shortlisted for the project contract. They must submit proposals within the scope of the RFP by September.

Patch File Photo